CORROSION FATIGUE IN SURGICAL IMPLANTS

被引:5
作者
COLANGELO, VJ
机构
[1] Watervliet, NY, Watervliet Arsenal
来源
JOURNAL OF BASIC ENGINEERING | 1969年 / 91卷 / 04期
关键词
D O I
10.1115/1.3571192
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Orthopedic appliances of type 316 SMO were examined after removal from hitman subjects. Fraclographic evidence, macroscopic and microscopic, is presented together with the overall incidence of fracture and fatigue for the specimens examined. Bend fatigue tests were conducted in air and in isotonic saline solution (0.9 percent NaCl) and the crack-growth rates determined. Data followed the empirical relationship proposed by Paris [5]1: da/dN = C(δK)m with m rising from 3.23 in air to 4.16 for isotonic saline. A distinct change in the appearance of the fracture surface was noted on the specimens broken in the saline environment. The specimens broken in air were bright, while the specimens fatigued in 0.9 percent NaCl were darkened with corrosion products. © 1969 by ASME.
引用
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页码:581 / +
页数:1
相关论文
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[5]  
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[6]  
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